Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, so the safety profile is covered. The description adds a useful behavioral constraint: 'Aceita até 100 consultas por chamada', which informs the agent about batch size limits beyond what annotations provide.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two short sentences with no filler. The main purpose is front-loaded, and the batch limit is a concise, valuable additional detail.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema, so the description should explain return values, but it does not. With seven parameters and zero schema coverage, the optional parameters remain largely ambiguous, making the definition sufficient for a basic call with only consultas but inadequate for confident use of advanced options.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description needed to compensate for the seven parameters. It only clarifies the query criteria and the 100-query batch limit; optional parameters such as pais, local, idioma, limite, pagina, and periodo are left undocumented, and the enum values of periodo are unexplained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource, 'Busca patentes no Google Patents', and lists searchable criteria: título, número, depositante e data. It is clearly distinguishable from sibling tools such as busca_google_academico or busca_google_imagens by the patent-specific target.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description clearly establishes that this tool is for patent searches on Google Patents, which differentiates it from the other Google search siblings. It does not explicitly state when not to use it or name alternative tools, so it stops short of a 5.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.